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2 years ago

Hey can anyone pls help me out in dis pls i will mark u as brainliest!!!!! and i will give 30 points

Mathematics

2 answers:

olga_2 [115]2 years ago

8 0

Answer:

Graph B does not belong

Step-by-step explanation:

All the other graphs are linear inequalities, whereas graph B is a quadratic inequality. You can also tell by how they look. The straight lines are linear, and the symmetric curve (parabola) is a quadratic

Delvig [45]2 years ago

5 0

Answer:

graph b because its a parabola

Step-by-step explanation:

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The nth term of a sequence is n^2 + 20.

Olegator [25]

Answer:

$\large\boxed{a)\ 21,\ 24,\ 29}\\\boxed{b)\ \text{five terms}}$

Step-by-step explanation:

$a_n=n^2+20\\\\a)\\\\\text{Substitute}\ n=1,\ n=2\ \text{and}\ n=3\ \text{to the }\ a_n:\\\\a_1=1^2+20=1+20=21\\\\a_2=2^2+20=4+20=24\\\\a_3=3^2+20=9+20=29$

$b)\\\\\text{You have to solve the inequality:}\\\\n^2+20$

3 0

2 years ago

New to function, may someone answer and explain?

Elenna [48]

Answer is number 2
F(3)= (3-1)^2+ 3(3)=4+9= 13 so the first option is wrong
F(-2)= (-2-1)^2+ 3(-2)= 9-6=3 third options is wrong
F(-15)= (-15-1)^2 +3(-15)= 256-45= 211 fourth option is wrong

8 0

2 years ago

From a group of 3 men and 4 women, a delegation of 2 is selected. What is the expected number of men in the delegation?

Ostrovityanka [42]

Answer:

The expected number of men in the delegation is 0.86.

Step-by-step explanation:

Number of men = 3

Number of women = 4

A delegation of 2 is selected.

Let X be the number of men selected. So, the possible values of X are 0,1,2.

$P(X=0)=\dfrac{^3C_0\times ^4C_2}{^7C_2}=\dfrac{2}{7}$

$P(X=1)=\dfrac{^3C_1\times ^4C_1}{^7C_2}=\dfrac{4}{7}$

$P(X=2)=\dfrac{^3C_2\times ^4C_0}{^7C_2}=\dfrac{1}{7}$

The expected number of men in the delegation is

$E(x)=0\times P(X=0)+1\times P(X=1)+2\times P(X=2)$

$E(x)=0\times \dfrac{2}{7}+1\times \dfrac{4}{7}+2\times \dfrac{1}{7}$

$E(x)=\dfrac{6}{7}$

$E(x)\approx 0.86$

Therefore, the expected number of men in the delegation is 0.86.

4 0

2 years ago

The steps below show the incomplete solution to find the value of m for the equation 4m − 2m + 4 = −1 + 13:

Law Incorporation [45]

The second 2m=8
2m=12-4

7 0

2 years ago

Read 2 more answers

Find the values in the table for x, y, and z. Then write an equation relating the number of individual songs, s, and the number

Mice21 [21]

Answer:

300 seconds. Q. Find the Equation for line red line. answer choices. y = 4. x = 4. y = 0 ... Write an equation relating the number of individual songs and the number of albums Jada can download. It costs $0.50 to download an individual song and $4 to download an album. Jada has $15 to spend downloading music.

Step-by-step explanation:

so it is Y hope you pass or i get it corrcet

7 0

2 years ago